CELL CYCLE
Sequence of stages through which a cell
passes between one cell division and the
next.
May take minutes or entire life time depending
on the type of cell.
Stages of the cell cycle are:
interphase, prophase, metaphase, anaphase,
telophase and cytokinesis.
The Cell Life Cycle
Gap 1 - Doubling
of cell size.
Regular cellular
activities.
transcription and
translation etc.
S
G1
Synthesis (copying)
of DNA - Regular
cell activities stop
G2
M
Gap 2 - Final
preparation for
division
Mitosis - Cell
division
IPMAT
Cell spends most of its time in interphase.
During interphase cell grows, replicates
the DNA and prepares for cell division.
MITOSIS
Cell division that produces two daughter cells
genetically identical to the parent cell. (Only one
parent – asexual reproduction)
Daughter cells have the same (diploid-2n)
number of chromosomes as the parent cell.
All body (somatic) cells are produced by mitosis
with the exception of the gametes (reproductive
cells).
Stages of mitosis:
prophase (pro means 1 or first)
metaphase (middle,line up in middle)
anaphase (apart, pulling apart)
telophase (separate, need telephone)
In these phases the DNA in the nucleus coils,
divides and separates.
Prophase
Disappearing Nuclear Membrane
& Condensing the Chromosomes
Metaphase
Chromosomes line up in
the middle of the cell
Mitotic
Spindle
Fibers
ANAphase
Chromosomes are
pulled apart
Poles of
the Cell
Telophase
•
Chromosomes pull far apart
•
2 Nuclei Form
•
Cleavage furrow forms
Mother cell
Nucleus with uncondensed
chromosomes
Stages Of Mitosis
Equator
of the cell
Interphase
Disappearing
nuclear
membrane
Poles of
the cell
Prophase
Mitotic
spindle
Two
daughter
cells
Metaphase
Anaphase
Telophase
CYTOKINESIS
Division of cytoplasm to daughter
cells following mitosis.
Begins during telophase and
completes cell division.
Cytokinesis is different in plant and
animal cell
CYTOKINESIS IN ANIMAL CELLS
CYTOKINESIS IN PLANT CELLS